Abstract
New data on phase equilibria for Sacha inchi seed oil in carbon dioxide have been measured using a variable volume cell phase equilibria system at temperatures of 303, 313 and 323 K and at pressures ranging from 4.3 to 27.7 MPa. The CO2 mole fraction varied from 0.7488 to 0.9997. At the studied concentrations, phase transitions of vapor-liquid, liquid-liquid-vapor and liquid-liquid were observed. Sacha inchi oil contains 47% of omega-3 fatty acids, with a ratio of 0.76:1 for omega-6:omega-3, which is good for human health. The Peng-Robinson equation of state was used to describe the experimental data. A qualitative agreement was obtained between experimental and calculated data for the binary system CO2 and Sacha inchi seed oil.
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Acknowledgment
The authors are grateful to Natural Science and Engineering Research Council of Canada (NSERC) for financial support of this project and CAPES/PROCAD-NF.
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do Prado, I.M., Giufrida, W.M., Alvarez, V.H. et al. Phase Equilibrium Measurements of Sacha Inchi Oil (Plukenetia volubilis) and CO2 at High Pressures. J Am Oil Chem Soc 88, 1263–1269 (2011). https://doi.org/10.1007/s11746-011-1786-z
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DOI: https://doi.org/10.1007/s11746-011-1786-z